Rocker Arm and Shaft Inspection: Inspection

How to use this service information .

1. Rocker Arm and Shaft - Inspect

   Preconditions 

   • Rocker Shaft and Rocker Arm Removed

   Figure 1 

   Courtesy of HONDA, U.S.A., INC.

   Procedure/Specifications 

   1. Measure the diameter of the rocker shaft at the first rocker location. (Figure 1)

   Tool Details (Figure 1) 

   Name
   a	Micrometer

   Figure 2 

   Courtesy of HONDA, U.S.A., INC.

   2. Zero the dial Indicator (b) to the rocker shaft diameter. (Figure 2)

   Tool Details (Figure 2) 

   Name
   b	Dial Indicator

   Figure 3 

   Courtesy of HONDA, U.S.A., INC.

   3. Measure the inside diameter of the rocker arm, and check it for an out-of-round condition. (Figure 3)

   Specifications 

   Standard Value (New)	Service Limit
   0.018-0.059 mm (0.00071-0.00232 in)	0.080 mm (0.00315 in)

   4. Repeat for all rocker arms and both shafts.

   Result 

   • If the measurement is not within specifications, replace the rocker shaft and all out of service limit rocker arms.
2. VTEC Rocker Arm - Test

   Preconditions 

   • Rocker Shaft and Rocker Arm Removed

   Courtesy of HONDA, U.S.A., INC.

   Procedure/Specifications 

   • Inspect the rocker arm pistons (a). Push on each piston manually.

   Specifications 

   Object	Specification
   a	Rocker arm pistons move smoothly.

   Result 

   • If it is abnormal, replace the rocker arm.